to begin its deformation. Therefore, the subsequent tests
were conducted applying shear stresses bigger than these
tensions, ensuring that the analyses were done in appropriate
conditions.
Stress Sweep. This test, like the yield stress analysis, is
also a preliminary study, because it helps to delimit the
conditions in which the next analyses must be carried out.
Analyzing Figures 2–5, it is possible to notice that the
ideal conditions of analysis of each formulation, given by
the most linear region of the curves, are those presented
in Table 2.